PSR-MS20 / PSR-MS25
Safety relay for emergency stop and safety door
monitoring
SILCL
IEC 62061
Data sheet
106167_en_03
1
Description
© PHOENIX CONTACT 2015-08-21
Intended Use
The
PSR-MS20
and
PSR-MS25
safety relays can be used
to monitor single-channel signal generators, e.g., emer-
gency stop buttons and safety door locking mechanisms,
and to control actuators.
The safety relays are equipped with an enabling current
path that drops out without delay according to stop cate-
gory 0 in accordance with EN 60204-1.
In the case of the
PSR-MS20
safety relay, the enabling cur-
rent path is controlled automatically once the sensor circuit
has been closed.
In the case of the
PSR-MS25
safety relay, the enabling cur-
rent path is controlled once the sensor circuit has been
closed and the manual reset device (reset button) has first
been pressed and released again (manual, monitored start).
With the manual, monitored reset device, a machine start
may not be triggered in accordance with EN ISO 13849-1.
Features
–
–
–
–
–
–
–
–
Safety relay for emergency stop and safety door moni-
toring
Suitable up to category 1, PL c (EN ISO 13849-1),
SILCL 1 (EN 62061)
Depending on the application, suitable up to catego-
ry 4, PL e (EN ISO 13849-1), SILCL 3 (EN 62061)
1 single-channel sensor circuit
1 undelayed enabling current path
1 digital signal output
Fixed screw connection
6.8 mm housing width
WARNING: Risk of electric shock
Observe the safety instructions in the corresponding section!
Make sure you always use the latest documentation.
It can be downloaded from the product at
phoenixcontact.net/products.
This document meets the same requirements as the original operating instructions in terms of contents and is
valid for all products listed in the “Ordering data” section.
PSR-MS20 / PSR-MS25
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Table of contents
Description .............................................................................................................................. 1
Table of contents ..................................................................................................................... 2
Ordering data .......................................................................................................................... 3
Technical data ......................................................................................................................... 3
Safety notes............................................................................................................................. 6
Basic circuit diagram ............................................................................................................... 7
6.1
Block diagram PSR-MS20
..................................................................................................... 7
6.2
Block diagram PSR-MS25
..................................................................................................... 7
Derating................................................................................................................................... 7
7.1
Vertical or horizontal mounting position
..................................................................................... 7
Load curve............................................................................................................................... 7
8.1
Ohmic load
........................................................................................................................ 7
Function/time diagrams ........................................................................................................... 8
9.1
Time diagram PSR-MS20
...................................................................................................... 8
9.2
Time diagram PSR-MS25
...................................................................................................... 8
Operating and indication elements .......................................................................................... 9
10.1 Connection versions
............................................................................................................. 9
10.2 Connection assignment
......................................................................................................... 9
Mounting and connection ...................................................................................................... 10
Startup................................................................................................................................... 10
Calculating the power dissipation .......................................................................................... 11
Diagnostics............................................................................................................................ 12
14.1 General states
.................................................................................................................. 12
14.2 Error Messages
................................................................................................................. 12
Application examples ............................................................................................................ 13
15.1 Emergency stop monitoring/automatic start
.............................................................................. 13
15.2 Safety door monitoring/automatic start
.................................................................................... 13
15.3 Connection to failsafe controller/automatic start
........................................................................ 14
15.4 Emergency stop monitoring/manual, monitored start
.................................................................. 14
15.5 Safety door monitoring/manual, monitored start
......................................................................... 15
15.6 Connection to failsafe controller/manual, monitored start
............................................................. 15
Revision history ..................................................................................................................... 16
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106167_en_03
PHOENIX CONTACT
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PSR-MS20 / PSR-MS25
3
Ordering data
Type
PSR-MS20-1NO-1DO-24DC-SC
Description
Safety relay for emergency stop and safety doors up to SIL 1, SILCL 1,
Cat. 1, PL c, depending on the application up to SIL 3, SILCL 3, Cat. 4,
PL e, 1-channel operation, automatic start, 1 enabling current path,
U
S
= 24 V DC,
fixed screw terminal block
Safety relay for emergency stop and safety doors up to SIL 1, SILCL 1,
Cat. 1, PL c, depending on the application up to SIL 3, SILCL 3, Cat. 4,
PL e, 1-channel operation, manual, monitored start, 1 enabling current
path, U
S
= 24 V DC,
fixed screw terminal block
Order No.
2904950
Pcs. / Pkt.
1
PSR-MS25-1NO-1DO-24DC-SC
2904951
1
4
Technical data
Hardware/firmware version
HW/FW
≥
00/-- (The technical data and safety characteristics are valid as of the specified
HW/FW version.)
Input data
Rated control supply voltage U
S
Rated control supply current I
S
Input voltage range "0"-signal
Typical inrush current
24 V DC -15 % / +10 %
typ. 42 mA
0 V DC ... 5 V DC (for safe off)
4.5 A (t = 120 s at U
s
)
< 20 mA (with U
s
/I
x
to S12)
< 10 mA (with U
s
/I
x
at the start circuit)
< 5 mA (with U
s
/I
x
to S12)
< 10 mA (with U
s
/I
x
at the start circuit)
typ. 1 W
24 V DC -15 % / +10 %
1 ms (at A1 in the event of voltage dips at U
s
)
max. 1.5 ms (at S12; test pulse width)
min. 7.5 ms (at S12; test pulse rate)
Test pulse rate = 5 x Test pulse width
150
Ω
< 175 ms
< 250 ms (when controlled via A1)
< 20 ms (when controlled via A1 or S12)
< 500 ms
0.5 Hz
1 x green LED
2 x green LEDs
Surge protection Suppressor diode
Reverse polarity protection for rated control supply voltage
Current consumption
Power consumption at U
S
Voltage at input/start and feedback circuit
Filter time
Max. permissible overall conductor resistance
(Input and reset circuit at U
S
)
Typical response time at U
s
Typical starting time with U
s
Typical release time with U
s
Recovery time
Maximum switching frequency
Operating voltage display
Status display
Protective circuit
Output data
Contact type
Contact material
Minimum switching voltage
Maximum switching voltage
Limiting continuous current
Maximum inrush current
Inrush current, minimum
Sq. Total current
1 enabling current path
AgSnO
2
20 V AC/DC
250 V AC/DC
6 A (N/O contact)
6A
3 mA
36 A
2
(see to derating)
106167_en_03
PHOENIX CONTACT
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PSR-MS20 / PSR-MS25
Output data
Switching capacity min.
Mechanical service life
Output fuse
60 mW
10 x 10
6
cycles
6 A gL/gG (N/O contact)
4 A gL/gG (for low-demand applications)
Alarm outputs
Number of outputs
Voltage
Current
Maximum inrush current
Short-circuit protection
1 (digital, PNP)
22 V DC (U
s
- 2 V)
max. 100 mA
500 mA (t = 1 ms at U
s
)
no
General data
Relay type
Nominal operating mode
Degree of protection
Min. degree of protection of inst. location
Mounting type
Mounting position
Assembly instructions
Dimensions (W/H/D)
Type of housing
Clearances and creepage distances between the power circuits
Rated insulation voltage
Rated surge voltage/insulation
Electromechanical relay with forcibly guided contacts in accordance with
IEC/EN 61810-3 (EN 50205)
100% operating factor
IP20
IP54
DIN rail mounting
vertical or horizontal
See derating curve
6.8 x 93.1 x 102.5 mm
PBT yellow
DIN EN 50178
250 V AC
Safe isolation, reinforced insulation 6 kV between input circuit and enabling cur-
rent path
Basic insulation 4 kV between all current paths and housing
2
III
Pollution degree
Surge voltage category
Connection data
Connection method
Conductor cross section, solid
Conductor cross section, stranded
Conductor cross section AWG/kcmil
Stripping length
Screw thread
Screw connection
0.2 mm² ... 2.5 mm²
0.2 mm² ... 2.5 mm²
26 ... 12
12 mm
M3
Ambient conditions
Ambient temperature (operation)
Ambient temperature (storage/transport)
Max. permissible relative humidity (operation)
Max. permissible humidity (storage/transport)
Maximum altitude
Shock
Vibration (operation)
-40 °C ... 60 °C (observe derating)
-40 °C ... 85 °C
75 % (on average, 85% infrequently, non-condensing)
75 % (on average, 85% infrequently, non-condensing)
max. 2000 m (Above sea level)
15g
10 Hz ...150 Hz, 2g
Conformance / approvals
Conformance
Approvals
CE-compliant
$
106167_en_03
PHOENIX CONTACT
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PSR-MS20 / PSR-MS25
Safety data
Stop category according to IEC 60204
0
Safety parameters for IEC 61508 - High demand
SIL
PFH
d
Demand rate
Proof test interval
Duration of use
1 (up to SIL 3 depending on the application)
1.5 x 10
-9
(4 A DC13; 5 A AC15; 8760 switching cycles/year)
< 12 Months
240 Months
240 Months
Safety parameters for IEC 61508 - Low demand
SIL
PFD
avg
Proof test interval
Duration of use
1 (up to SIL 3 depending on the application)
1.47 x 10
-4
60 Months
240 Months
Safety parameters for EN 62061
SIL CL
1 (up to SIL CL 3 depending on the application)
Safety characteristic data according to EN ISO 13849
Category
Performance level
Duration of use
1 (up to Cat. 4 depending on the application)
c (up to PL e depending on the application)
240 Months
For applications in PL e, the required demand rate for the safety function is once per month.
Calculation basis
4 A DC13; 5 A AC15; 8760 switching cycles/year
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